<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>

        <p th:text="${msg}" style="color: red"></p>
        <form th:action="@{/login}">
            <p> 用户名：<input type="text" name="username"></p>
            <p> 密码：<input type="password" name="password"></p>
            <p><input type="submit"></p>
        </form>

    </body>
</html>